Average temperatures, rainfall and packing tips for Colombo, Sri Lanka in September
🌡️ Avg high
29°C
🌙 Avg low
25°C
🌧️ Rainfall
~315 mm
📊 Warmth rank
#10 of 12
September in Colombo at a glance
September in Colombo is typically hot, with average daytime highs around 29°C and nights near 25°C. It is one of the cooler months of Colombo's year.
September is one of the wetter months in Colombo, with around 315 mm of rain - plan around showers.
What to pack for Colombo in September
Light, breathable clothing (cotton or linen)
Sun protection: hat, sunglasses and SPF
A refillable water bottle
A rain jacket or umbrella - this is one of the wetter months
Colombo - year at a glance
HighLow · September highlighted
Is September a good time to visit Colombo?
🧳 September is one of the most comfortable months to visit Colombo - daytime temperatures sit in a pleasant range and it's a good pick for sightseeing and time outdoors.
In September, Colombo averages a daytime high of about 29°C and a night-time low of around 25°C, based on recent historical data.
Does it rain in Colombo in September?
September is one of the wetter months in Colombo, with around 315 mm of rain - plan around showers.
Is September a good time to visit Colombo?
September is one of the most comfortable months to visit Colombo - daytime temperatures sit in a pleasant range and it's a good pick for sightseeing and time outdoors.